Crazy, I was learning about ActivityPub yesterday. The vocab could theoretically support this over torrents, too (although I haven't yet thought through how it would work as a protocol):

    {
        "@context": {
            "@vocab": "https://www.w3.org/ns/activitystreams",
            "git": "https://gittorrent.org/ns/"
        },
        "type": "git:PullRequest",
        "to": ["gittorrent://cjb/gittorrent#master"],
        "git:from": "gittorrent://zamalek/gittorrent#feature/activitystreams"
    }